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Zhu Z, Chen Y, Jia N, Zhang W, Hou H, Xue C, Wang Y. Identification of three novel antioxidative peptides from Auxenochlorella pyrenoidosa protein hydrolysates based on a peptidomics strategy. Food Chem 2021; 375:131849. [PMID: 34942500 DOI: 10.1016/j.foodchem.2021.131849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 12/05/2021] [Accepted: 12/09/2021] [Indexed: 11/17/2022]
Abstract
Auxenochlorella pyrenoidosa is recognized as a potential sustainable protein material in food industry, however, its application remains still very limited. Herein, this study aimed to investigate the antioxidative properties of Auxenochlorella pyrenoidosa protein hydrolysates and identify novel antioxidative peptides from protein hydrolysates through a workflow mainly including enzymatic hydrolysis, peptidome quantification, quantitative structure-activity relationship (QSAR) modeling, in silico screening, and validation. Three novel antioxidative peptides including AGWACLVG, IDLAY and YPLDL were identified from protein hydrolysates by papain with the hydrolysis time of 4 h, in which, AGWACLVG showed strong 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity with the IC50 value of 68.88 µM and Trolox equivalent antioxidative capacity of 6.20 ± 0.23 mmol TE/g. This study suggested that Auxenochlorella pyrenoidosa protein hydrolysates could be used as potential antioxidative ingredients in food industry, and the identification of novel antioxidative peptides would contribute to the construction of more robust QSAR models in the future.
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Affiliation(s)
- Zihao Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Yuyang Chen
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Nan Jia
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Wenhan Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Hu Hou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Yanchao Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
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Wan MY, Dong G, Yang BQ, Feng H. Identification and characterization of a novel antioxidant peptide from feather keratin hydrolysate. Biotechnol Lett 2016; 38:643-9. [PMID: 26687200 DOI: 10.1007/s10529-015-2016-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To improve the potential value of feather, which is a valuable protein resource, we have separated and identified antioxidant peptide(s) from feather hydrolysate. RESULTS Feather hydrolysate was prepared by fermentation with Bacillus subtilis S1-4. Antioxidative peptides were separated by sequential acid precipitation, cation exchange, and reversed-phase fast performance liquid chromatography. Finally, a peptide with antioxidative activity was identified as Ser-Asn-Leu-Cys-Arg-Pro-Cys-Gly by MALDI time-of-flight (TOF)/TOF analysis, and determined to represent a portion of feather keratin near its N-terminal. A synthesized peptide with the same sequence was used to characterize its antioxidative properties, including scavenging free radicals, reducing power, and Fe(2+) chelation. In terms of the peptide's amino acid composition, the antioxidative activity might be mainly attributed to Cys and other amino acid residues. CONCLUSION Feather keratin is a good source for the quantitative preparation of antioxidative peptides.
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Je JY, Cho YS, Gong M, Udenigwe CC. Dipeptide Phe-Cys derived from in silico thermolysin-hydrolysed RuBisCO large subunit suppresses oxidative stress in cultured human hepatocytes. Food Chem 2014; 171:287-91. [PMID: 25308671 DOI: 10.1016/j.foodchem.2014.09.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 07/28/2014] [Accepted: 09/05/2014] [Indexed: 11/24/2022]
Abstract
A dipeptide (Phe-Cys) was predicted to be bioactive following bioinformatics analysis of the large subunit of plant and microalgae ribulose-1,5-bisphosphate carboxylase (RuBisCO), which was hydrolysed in silico with thermolysin. The peptide was synthesised and found to possess in vitro reducing potential and inhibitory activity against lipid peroxidation, comparable to the activity of glutathione. In cultured Chang human hepatocytes, 2.5-10 μM Phe-Cys was found to induce the suppression of reactive oxygen species formation and membrane lipid peroxidation in oxidative stressed cells. Intracellular glutathione levels were found to increase in the peptide-treated cells under normal condition, which can potentially contribute in protecting the cells from oxidative damage. Furthermore, Western blot analysis showed that the levels of antioxidant enzymes, catalase and superoxide dismutase-1, increased in the hepatic cells when treated with Phe-Cys in the presence of the oxidant. The results show that this peptide has great potential to be used against oxidative stress-induced health conditions.
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Affiliation(s)
- Jae-Young Je
- Department of Marine-Bio Convergence Science, Specialized Graduate School of Science & Technology Convergence, Pukyong National University, Busan 608 737, Republic of Korea
| | - Young-Sook Cho
- Department of Marine Bio-Food Sciences, Chonnam National University, Yeosu 550 749, Republic of Korea
| | - Min Gong
- Health and Bioproducts Research Laboratory, Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia B2N 5E3, Canada
| | - Chibuike C Udenigwe
- Health and Bioproducts Research Laboratory, Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia B2N 5E3, Canada.
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Ko JY, Kim EA, Lee JH, Kang MC, Lee JS, Kim JS, Jung WK, Jeon YJ. Protective effect of aquacultured flounder fish-derived peptide against oxidative stress in zebrafish. Fish Shellfish Immunol 2014; 36:320-323. [PMID: 24333583 DOI: 10.1016/j.fsi.2013.11.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/24/2013] [Accepted: 11/26/2013] [Indexed: 06/03/2023]
Abstract
This study investigates the protective effect of aquacultured flounder fish-derived peptide (AFFP) against 2,2-azobis-(2-amidinopropane) hydrochloride (AAPH)-induced oxidative damage in a zebrafish model. Zebrafish embryos were evaluated for the protective effect by heartbeat rate, survival rate, ROS generation, lipid peroxidation, and cell death. In the results, the AAPH group showed a low survival rate, whereas the AFFP and AAPH co-treated group increased a survival rate. Also, AFFP dose-dependently reduced AAPH-induced intracellular ROS and lipid peroxidation, and decreased cell death in AAPH-induced zebrafish. These results revealed that AFFP could be used as a natural antioxidant, and that the zebrafish provides an alternative in vivo model to efficiently evaluate the antioxidative effects of peptides on fishes.
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Affiliation(s)
- Ju-Young Ko
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Eun-A Kim
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Ji-Hyeok Lee
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Min-Cheol Kang
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jung-Suck Lee
- Industry-Academy Cooperation Foundation, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jin-Soo Kim
- Department of Seafood Science and Technology, Institute of Marine Industry, Gyeongsang National University, Tongyeong 650-160, Republic of Korea
| | - Won-Kyo Jung
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus) Pukyong National University, Busan 608-737, Republic of Korea.
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea.
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Jiang H, Tong T, Sun J, Xu Y, Zhao Z, Liao D. Purification and characterization of antioxidative peptides from round scad (Decapterus maruadsi) muscle protein hydrolysate. Food Chem 2013; 154:158-63. [PMID: 24518328 DOI: 10.1016/j.foodchem.2013.12.074] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 11/22/2013] [Accepted: 12/18/2013] [Indexed: 11/19/2022]
Abstract
Muscle protein from round scad (Decapterus maruadsi) was hydrolyzed with five commercial proteases, namely, Alcalase, neutral protease, papain, pepsin, and trypsin. Round scad hydrolysate (RSH) prepared with Alcalase demonstrated high antioxidative activity. After ultrafiltration, RSH-III fraction (MW<5kDa) exhibited the strongest activity. Then, RSH-III was purified by gel filtration chromatography (Sephadex G-15) and separated into four fractions (A, B, C, and D), of which fraction B showed the highest antioxidative activity and was further purified using reverse-phase high-performance liquid chromatography twice. The purified peptides were identified as His-Asp-His-Pro-Val-Cys (706.8Da) and His-Glu-Lys-Val-Cys (614.7Da) by matrix-assisted laser desorption ionization time-of-flight/time-of-flight mass spectrometry. Subsequently, the identified peptides were synthesized, and their antioxidative activities were verified. Results indicated that the two novel peptides isolated from round scad muscle protein can be developed into antioxidative ingredients in functional foods.
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Affiliation(s)
- Haiping Jiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China; Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, Nanning 530004, Guangxi, China
| | - Tianzhe Tong
- School of Chemistry and Materials Science, University of Science and Technology of China, Anhui 230026, China
| | - Jianhua Sun
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China
| | - Yuanjin Xu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China
| | - Zhongxing Zhao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China
| | - Dankui Liao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China; Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, Nanning 530004, Guangxi, China.
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Wang Q, Li W, He Y, Ren D, Kow F, Song L, Yu X. Novel antioxidative peptides from the protein hydrolysate of oysters (Crassostrea talienwhanensis). Food Chem 2013; 145:991-6. [PMID: 24128574 DOI: 10.1016/j.foodchem.2013.08.099] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 08/10/2013] [Accepted: 08/23/2013] [Indexed: 10/26/2022]
Abstract
The antioxidative activity of hydrolysate peptides from oysters (Crassostrea talienwhanensis) was investigated. After hydrolysis with subtilisin, the yields of the peptides that were soluble in trichloroacetic acid (TCA-soluble) and the antioxidant activities of the resulting hydrolysate were determined using an orthogonal design and a hydroxyl radical scavenging reaction. The hydrolysate was fractionated using Sephadex G-15 gel filtration chromatography, and the two resulting bioactive peptides were subsequently purified by RP-HPLC with a Kromasil C18 (ODS) column. The amino acid sequences were analyzed by nano-ESI-MS/MS. The critical reaction temperature, pH, hydrolysis time and enzyme-to-substrate (E/S) ratio were determined for the optimum hydrolysis with subtilisin, and the E/S ratio was found to be the most critical reaction condition. The amino acid sequences of the peptides (518 and 440 Da) were proline-valine-methionine-glycine-aspartic acid (PVMGA) and glutamine-histidine-glycine-valine (QHGV), respectively. These two novel peptides exhibited high antioxidative actions based on their hydroxyl and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities.
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Affiliation(s)
- Qiukuan Wang
- Marine Bioproducts Engineering Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China; Key Laboratory of Aquatic Products Processing and Utilization of Liaoning Province, Dalian Ocean University, Dalian 116023, PR China
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